The best part about source graph it's that I can do my work without interruptions (it helps me with coding).The worst thing so far this program doesn't have any bugs or errors in its interface which makes working difficult sometimes because everything seems to be ok but when we click something nothing happens! Maybe there should be an option where you can choose what kind of software/programming language they want us to use instead of letting them pick automatically? That would make things easier. Just try out it. You will like how easy it works once u get used too it. Its really helpful since i'm not good at typing cuz if anything goes wrong during programming then im able to find exactly whats going wrong by just using their website.I recommend anyone who wants to learn more abt computer science to give this product a shot. If one does well he'll know much better.